Results 61 to 70 of about 841,753 (381)
Weak Gravitational Lensing [PDF]
Proceedings of Frontiers of Fundamental Physics 14 — PoS(FFP14), 2008 In this brief review I consider the advances made in weak gravitational lensing over the last 8 years, concentrating on the large scales - cosmic shear. I outline the theoretical developments, observational status, and the challenges which cosmic shear must overcome to realise its full potential. Finally I consider the prospects for probing Dark Energy
openaire +6 more sources
Second-order weak lensing from modified gravity [PDF]
, 2011 We explore the sensitivity of weak gravitational lensing to second-order corrections to the spacetime metric within a cosmological adaptation of the parameterized post-Newtonian framework.
Caldwell, Robert R. +2 more
core +3 more sources
Universe, 2023 In the present paper, strong deflection gravitational lensing is studied in a conformal gravity black hole. With the help of geometric optics limits, we have formulated the light cone conditions for the photons coupled to the Weyl tensor in a conformal ...
Ghulam Abbas +3 more
doaj +1 more source
Gravitational lensing and modified Newtonian dynamics [PDF]
, 2001 Gravitational lensing is most often used as a tool to investigate the distribution of (dark) matter in the universe, but, if the mass distribution is known a priori, it becomes, at least in principle, a powerful probe of gravity itself.
Daniel J. Mortlock +3 more
core +8 more sources
Evolving Morphology of Resolved Stellar Einstein Rings
The Astrophysical Journal, 2023 We consider strong gravitational lensing by nearby stars. Using our wave-optical treatment of lensing phenomena, we study Einstein rings that may form around nearby stellar lenses.
Slava G. Turyshev, Viktor T. Toth
doaj +1 more source
Shadow and Weak Deflection Angle of a Black Hole in Nonlocal Gravity
Universe, 2022 Black hole shadow and gravitational lensing play important roles in testing gravitational theories in the strong field regime. As the first-order modifications from quantum gravity, the nonlocality can be manifested by black hole shadow and gravitational
Qi-Ming Fu +4 more
doaj +1 more source
Localizing merging black holes with sub-arcsecond precision using gravitational-wave lensing [PDF]
Monthly notices of the Royal Astronomical Society, 2020 The current gravitational-wave (GW) localization methods rely mainly on sources with electromagnetic counterparts. Unfortunately, a binary black hole does not emit light.
O. Hannuksela +3 more
semanticscholar +1 more source
Editorial of Modified Theories of Gravity and Cosmological Applications
Universe, 2022 General Relativity is a theory of gravity that describes some of the effects of gravity with high accuracy, such as solar system tests, gravitational lensing, gravitational waves, black holes, deflection angle, etc [...]
Panayiotis Stavrinos, Emmanuel Saridakis
doaj +1 more source
Probing the theory of gravity with gravitational lensing of gravitational waves and galaxy surveys [PDF]
Monthly notices of the Royal Astronomical Society, 2019 The cross-correlation of gravitational wave strain with upcoming galaxy surveys probes theories of gravity in a new way. This method enables testing the theory of gravity by combining the effects from both gravitational lensing of gravitational waves ...
S. Mukherjee, B. Wandelt, J. Silk
semanticscholar +1 more source
Identifying Strong Gravitational-wave Lensing during the Second Observing Run of Advanced LIGO and Advanced Virgo [PDF]
Astrophysical Journal, 2020 We perform Bayesian model selection with parameter estimation to identify potentially lensed gravitational-wave images from the second observing run (O2) of Advanced LIGO and Advanced Virgo.
Xiaoshu Liu +2 more
semanticscholar +1 more source